     <!DOCTYPE html>
      <html lang="en">
      <head>
       <meta charset="UTF-8">
        <title>登录页面</title>
      </head>
        <body>
        <h1>todo List</h1>
        <form>
        <input id='input'  type="text" name="item">
       <input  id="submit" type="button" value="submit">
      </form>
         <ul id="items">
       <script src="./12-todo.js">
       </script>
          </ul>
          </body>

      </html>    
